Homeland Security Nominee Is Pressed on Border Security

McCain Voices Opposition to Jeh Johnson's Nomination

WASHINGTON—President Barack Obama's nominee to lead the Department of Homeland Security on Wednesday was pressed to make commitments about tightening U.S.-Mexico border security but encountered little major opposition during his Senate confirmation hearing.

Jeh Johnson, a former general counsel to the Defense Department, told the Homeland Security and Government Affairs Committee he would focus on raising morale and filling the high number of vacancies at Homeland Security, which was cobbled together after the Sept. 11,...